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sane-sceptre(5) 								  sane-sceptre(5)

       sane-sceptre - SANE backend for SCEPTRE scanners

       The sane-sceptre library implements a SANE (Scanner Access Now Easy) backend that provides
       access to Sceptre flatbed scanners. This backend should be considered  beta-quality  soft-
       ware!  Please  report any strange behavior to the maintainer of the backend or to the SANE
       mailing list.

       At present, only one scanner is known to work with this backend:

	      Model			   Connection Type
	      ---------------------------  -------------------
	      Sceptre VividScan S1200	   SCSI

       The make of this scanner is KINPO, so other scanners from that manufacturer may also  work
       (eg. the S600).

       The  options  the  backend supports can either be selected through command line options to
       programs like scanimage or through GUI elements in xscanimage or xsane.

       Valid command line options and their syntax can be listed by using
	      scanimage --help -d sceptre

       Scan Mode

       --mode selects the basic mode of operation of  the  scanner  valid  choices  are  Lineart,
	      Halftone, Gray and Color.  The Lineart and Haltone mode are black and white only (1
	      bit). Gray will produce 256 levels of gray (8 bits). Color will produce a  24  bits
	      color image. The scanner suports 30 bits internally but it only exports 24.

	      selects  the  resolution for a scan. The scanner can do several resolutions between
	      50 and 1200.

	      selects the pattern mode that is used in Halftone mode. Valid options are 1,  2,	3
	      and 4.

	      controls	the scanner internal gamma correction. Valid options are "Default", "User
	      defined", "High density printing" "Low density printing" and "High contrast  print-

	      (color  mode only) allows the user to specify a gamma table (see the next 3 parame-

	      (color mode only) can be used to download a user defined gamma table  for  the  red
	      channel. The table must be 256 bytes long.

	      (color  mode only) can be used to download a user defined gamma table for the green
	      channel. The table must be 256 bytes long.

	      (color mode only) can be used to download a user defined gamma table for	the  blue
	      channel. The table must be 256 bytes long.

	      sets  the threshold for black and white pixels in lineart mode. Possible values are
	      from 0 (darker) to 255 (lighter).

	      requests a preview scan. The resolution used for that scan is 30 dpi and	the  scan
	      area is the maximum allowed. The scan mode is user selected. The default is "no".

       The geometry options

       -l -t -x -y
	      control the scan area: -l sets the top left x coordinate, -t the top left y coordi-
	      nate, -x selects the width and -y the height of the scan area. All  parameters  are
	      specified in milimeters by default.

       The  configuration file /etc/sane.d/sceptre.conf supports only one information: the device
       name to use (eg /dev/scanner).

	      The static library implementing this backend.

	      The shared library implementing this  backend  (present  on  systems  that  support
	      dynamic loading).

	      If  the  library was compiled with debug support enabled, this environment variable
	      controls the debug level for this backend. E.g., a value of 128 requests all  debug
	      output to be printed. Smaller levels reduce verbosity.

	      The windows TWAIN driver can be set to any resolution between 50 to 1200 (excluding
	      software interpolation). This backend cannot. Only  a  handful  of  resolution  are
	      available, although they should be numerous enough.

       None known.

       sane-scsi(5), scanimage(1), xscanimage(1), xsane(1), sane(7)

       The package is actively maintained by Frank Zago.

					 April 21st, 2002			  sane-sceptre(5)
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